Shadowflight: You seem to have answered your own problem.
Contact the site from which you actually purchased the game and see if you can get a refund, if the key you bought didnt work, good luck with that.
SirPrimalform: Just a possibility, but it sounds like he's quoting something displayed in his account, in the place he expected to find his order history. Payment processing issues happen, I'm prepared to give him the benefit of the doubt even if his attitude is shitty. Why do you assume his problem isn't legit?
Well, I guess I should give them the benefit of the doubt, yes. But, I have seen games disappear from peoples accounts and an account refresh should cure that problem, but tbh, I have never seen the problem that
"You have not purchased anything from GOG" before, so Im just guessing that the person bought it elsewhere and the code didnt work, because I have seen that problem before.
But, I'm just guessing and trying to help the person direct this query to where it may be more sensible. I wasnt mean/sarcastic, I was serious,. If I gave the impression that I was mean/sarcatic, I of course apologise :).